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ALPINE-CVE-2026-62430

Type: advisorySource: OSV1 source record

Accesses to the CMOS memory contents are done using an indirect IO port pair. Therefore Xen needs to cache the guest chosen index, and one of the usages of the index didn't take the necessary locking to avoid concurrent changes. As a result, a guest could change the index after it being checked, causing a subsequent out-of-bound read access to the contents of an array.

Announced Source revision 1
Original source ↗

ALPINE-CVE-2026-62430

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:ALPINE-CVE-2026-62430

xen

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
4.19.6-r0

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

xen

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
4.20.4-r0

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

xen

Source reference: /affected/2/package/name

Affected versions
Not stated in this record
Fixed versions
4.20.4-r0

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

xen

Source reference: /affected/3/package/name

Affected versions
Not stated in this record
Fixed versions
4.21.2-r0

Source reference: /affected/3/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "4.19.6-r0"
          }
        ]
      }
    ],
    "package": {
      "name": "xen",
      "purl": "pkg:apk/alpine/xen?arch=source",
      "ecosystem": "Alpine:v3.21"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-62430.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "4.20.4-r0"
          }
        ]
      }
    ],
    "package": {
      "name": "xen",
      "purl": "pkg:apk/alpine/xen?arch=source",
      "ecosystem": "Alpine:v3.22"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-62430.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "4.20.4-r0"
          }
        ]
      }
    ],
    "package": {
      "name": "xen",
      "purl": "pkg:apk/alpine/xen?arch=source",
      "ecosystem": "Alpine:v3.23"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-62430.json"
    },
    "ecosystem_specific": {}
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "4.21.2-r0"
          }
        ]
      }
    ],
    "package": {
      "name": "xen",
      "purl": "pkg:apk/alpine/xen?arch=source",
      "ecosystem": "Alpine:v3.24"
    },
    "database_specific": {
      "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-62430.json"
    },
    "ecosystem_specific": {}
  }
]

Publisher severity

No explicit severity was provided.

Event
#54605 · Revision 1
Added to Heist Feed
Publisher date
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